Weighing and recording device



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.l A. woLF WIGHING AND RECORDING DEVICE Filed Nov. 27, '1922 2 slung-sh.2

Patented Aug. i9, i924.

ARTHUR WOLF, OF VENNA, l'siUSRLi.

WEGHNG AND RECORDTNG DEVICE.

Application iled November 27, 1922. Serial N'o. 603,653.

To all 'who/m, t may concern.'

Be it know that I, Anfrrror. lilou@ a citizen of the CzechoslovakianRepublic, residing at Vienna. Austria., have invented ertain new anduseful improvements in lieighing and Recording levicesl of which thefollowing is a speciication.

My invention refers to weighing devices and more especially to apparatusof the kind aforesaid provided with means for registering and recordingthe weight.

'.-hcre are weighing devices in uset in which the weights are enclosedin a ase and are normally held in an elevated position and engage on thescale beam through the action of corresponding keys, the weighing resultbeing made visible on an indicator. This kind of weighing device has notproved eflicient inasmuch as the construction and arrangement of theweights were not well chosen, in consequence or which scales used forgreater weights had to be rather bulky. The principal drawback, however7connected with such weighing devices consists therein that theshopkeeper has no control as to the quantities that are weighed out, sothat he is liable to suffer losses.

rlihese deficiencies are avoided by the present invention, according towhich the 1weights are represented by oscillatory levers held in anelevated position by supports and 'which are lowered by the action ofthe keybars, causing the corresponding weight le ver to come to rest ona rail which is connected with the scale beam. Preferably the supportsthat hold the oscillatory weight levers in an elevated position areconstructed as eccentric tappets or cam disks. By the action of thecorresponding key-bar7 they can be turned either singly or several attime.s thus causing the weight levers to act on the scale beam. Theweight levers are preferably constructed as weighing units and thecam-discs of each group of weights (l grann l() grams, l() grams, lkilogram) are united to form one or several cylinders which are rotatedthrough diii'crent angles by means of a single key-bar according to theextent of its motion, causing` the single weight levers on thescale-beam to rest in succession.

rEhe motion of the figure-cylinders that indicate the result of weighingis transmitted to a set of cylinders provided with printing` type, whichmay be set accordingly so as to print the results on a slip of paper forthe use of the shop-keeper. To protect him from losses when selling, theweighed out goods the device is constructed so that the seller iscompelled to cause the printing appliance to act automatically when theresult of weighing becomes visible in figures. At the same time theweighing appliance is locked so as to render any fraudulent handling ofthe weights impossible. To allow of further action of the weights theweighing appliance must first be unlocked, however at the same time thepaper strip of the printing appliance is automatically set and ready forfurther use. Thus each sale is recorded automatically.

To improve the weighing appliance a cash register may be combined withit which causes the amounts to be indicated on the same paper that showsthe weight of the goods sold.

ln the drawings aliixed to this specification and forming part thereof adevice einbodying my invention is illustrated diagrammatically by way ofexample.

ln the drawings- Fig. 1 is an elevation partly in section, viewed fromwithin,

Fig. 2 is a partial plan, and

Fig. 3 is a front view of the printing device.

Referring to the drawing, on the bed-plate l the scale-beams 3 arearranged in bearings on standards 2. They carry at one end the scale dand at the other the rail 5, on `rhich the weight lever 7 supported onedges 6 are aused to rest. The. weight levers l' represent the unitweights and are all equal in any group of weights. According to t ieinvention they are held in an elevated position by a cani disc 9revolving around a horizontal axle 8, the eight levers l resting on thecircumference of the cam discs by means of the angular projections l()which are provided for this ypurpose with small rolls at the end. ln theconstruction shown on drawing the cam discs of each group of weights areunited to form two cylinders. Each separate cani-disc cooperating with aseparate weight lever is so shaped that within each group of weightsevery single weight lever acts on the scalebeam in succession with theothers, according to the corresponding rotation of the cam-disccylinders.

The combination of the cam-discs 9 into two cylinders within each groupof weights is an improvement on the single cylinder system, because thediameter ot the cam cylinder may be considerably smaller. For an angularmovement ot about 6()O is available for the motion et the separateweight levers, Whereas it' there is only a single cylinder', at most 1%of a revolution is available tor each Weight lever. In the latter casetherefore, the inclined face of cam 9 which cooperates with the weightlever has to be much steeper, or else, to avoid this, the diameter ofthe cam cylinder must be larger.

The operation of both the cam cylinders of each group of weights iscaused by a lever 11 oscillating around a horizontal axle 10, this levercarrying a key button 12, and being adjustable by means ot a resilientcog on a scale 13 showing the `figures 0 to 9. A toothed segment 111attached to the key lever 11 cooperates with the driving wheels 15arranged on adjoining faces ot the cam cylinders of each group. As boththe cam cylinders must only act one after the other when the key leversare moved, to bring the different weight levers to rest in succession onthe scale-beam, the teeth of the toothed segments 14 which meet with thedriving wheels 15 are arranged on the segment in staggered relation insuch manner that when one tooth is in gear with the correspondingdriving wheel, the other driving wheel is not influenced by the secondtooth and vice versa.

A toothed segment 16 on the-axis ot os cillation 10 of each key lever 11is in gear with a pinion 1i', the rotation of which is transmitted tothe figure wheel 19 by means of a chain which might be replaced by arack or the like. The actual position of the ligure wheel can be madevisible through the opening 20.

The rotary motion ot the figure wheel 19 is transmitted by means of achain 21 to a set of wheels 22 provided with printing type, which printthe weighing result on to a strip ot paper. The opening` 2O is normallyclosed by a screen 23 which, after the weigh.- ing out has beenaccomplished and the balance has come to a rest in the normal positionindicated by the tongue 24., has to be opened by the salesman to showYthe customer the exact result of weighing, thus giving him anopportunity to control the weight. ln Aorder further to protect theshopkeeper from being cheated, the result ot weighing printedautomatically at the moment itl becomes visible to the buyer.

To this end there is provided a lever 26 swinging around a horizontalaxis 25, and projecting through the front wall oi the case with a handlefixed to its tree end, while the rear end is coupled with the screen 23.A link 27 pivotally connects the lever with a rock arm 28 acting on theprinting head wiich consists ot a cross-head 29 (Figs. 1 and 3) arrangedunderneath the type-wheels 22 and guided by bolts 30 in a block 301. Thesprings 31 strive to press the head 29 upwards, while two pawls 32litting into the lower guide-bar and gearing with corresponding notchesof the bolts tend to hold it down. Each of the pawls is providedlaterally with a small roller 33 contacting with the free end et an arm281. These arms are lined to the axis of the levers 28. The arms 281 areslotted and embrace pins 35 liied to the guide bolt 30 of the printinghead.

TWhen the key lever 26 is depressed by means of its handle, the screen23 is raised and the exact result oit w ighing is made visible to thebuyer. At the same time the rollers 33 and the pawls 32 are pressedoutwards by the tree ends ot levers 281 swinging iip-.va.1i.'tls, inconsequence of' which they are disengaged trom the guide bolts 30,causing the latter to be lifted by the springs 31 together with theprinting head 29 which then cause the figures on the wheels 22 lo beprinted on the paper strip.

The result of .veighing is printed on three stri ps. One ot them isdisposed on the roller 38, while the others are wound as a double bandaround roller 37, but might also be ar` ranged on separate rollers. Fromthese roll ers the three strips of paper run through between a pair of'ifeed rollers 38 into a guide sleeve 39, provided with a transverseslot "acing the printing head and the type of the wheels which set forthe printing operation. The single paper strip is guided upwards behindthel the place where the printingl is ellfected, through a slot in theguide sleeve 39, and is wound up on a roller 110, acted upon by aspring, according to the degree o1 tep V of the feed. rollers 38. Therollers el() with the ditlierent results ot weighing printed on thestrip serve as a control 'tor the shopkeeper. The feed roll ers 38 areactuated trom lever 26 by means ci a link i1-1 and a double armed lever41.2 operatively connected with a pawl 13 cooperating with the ratchet'wheel lill, which is coupled with the lower roller 38.

1When lever 26 raised again aifter prii'rting. the screen 23 is loweredin trent ot the aperture the printing` device is torced downwards by helever 281 inst the action of spring` 31 until the oawls 32 enter thecorresponding rests ot the `guide bolts 30. Ry this back movement ot thekey lever 26 the feed rollers 38 are rotated and the paper strips drawnforward.

A cutter 415 fixed in the block 3()I of the printing device is lifted byband to cut oli the two superposed paper strips, which project 'trom thebent down end of the guide sleeve 39, after one or several weiglr mossos:3

ing results have been printed. One slip goes to the buyer, the other oneserves for controlling the salesman or the cashier.

To protect the shopkeeper against nonrecorded weighing a device isprovided which allows the weight levers to act only when the printinglever 26 is in an elevated position, so that the weighing results haveto be printed and the paper strips drawn out before further operation ofthe device is possible.

To this end every cam roller bears a circular rim 47, with cut outportions 46. ln the positions of a cam roller correspond ing to thesetting of the key lever l1 a cut out portion 46 of the rim 47 will facea tooth 48 of a roclr lever 50 oscillating about a shaft 49 carrying anupright arm 51 the free end of which extends into the path of lever 26and when pressed down is caused to roclr by an arm 52 depending from thelever 26, thereby lifting the catch 4S which catches into the cut outportion 46 of the rim 47, so that the cam roller 9 is locked. When theprinting lever Q6 is lifted again, arm 52 releases the roclt arm 51 andallows lever to move downwards through its own weight. The catch 48 iswithdrawn and an angular movement of the cam rollers 9 and an operationof the weight levers is rendered possible.

Preferably when the printing lever 26 is depressed, a bell is made toring as a signal for the costumer that the weighing is done and that hecan control the results through the aperture 20.

To protect the shoplreeper from fraudulent weighing if for instance thesalesman should try to sell to a costumer below the real weight,provision may be made that the lever 26 can be fully depressed only whenthe ytongues 24 of the scale are in perfect balance. Of course, a slightdifference cor-- responding to the weight of 5 grams should be accountedfor.

To this end a plate 54 can be brought into action through the lever 26by means of the linlrs 41 and 53. ln the position of balance this plateis free to pass through below the tongue 24, which is preferablyrenclosed in a glass case while, when the tongues do not register, theplate will be held up by the lower one and will thus prevent the lever26 from being pressed. down any further.

The supporting of the weight levers by cam discs is not restricted tocases where they adopt the form of uniform weights, but also to caseswhere the single weights differ. In such a case the single cam discs aremade to rotate by aid of separate keys or in any other suitable manner.

In order to allow speedy weighing buffers 55 are fixed to the base plateof case l, underneath the scale-beam 3, such buifers allowing thescale-beam to swing only if there is a slight difference in weight, suchas l() grams.

lier purposes of transport the scale is removed. By turning theeccentric tappets or cam discs the weight levers are lowered and come torest on the cross bar of the scale-beam. To secure the weight levers inthis position one or several rods are pushed into the case walls fromoutside above the levers and loclred in place. The scale-beam may alsobe secured in a simi.' lar way.

l do not in general way desire. to be limited to the exact details ofconstruction shown and described, for obvious modifications will occurto a person skilled in the art.

l. A weighing and recording device com prising in combination, ascale-beam, a weight in the form of a rock arm, means for holding saidweight in elevated posi tion a lrey lever adapted to cause said weightto lowered and to bear on said scale-beam and means, adapted to beoperated by said hej; lever, for recording the weighing result.

Q. weighing and recording device coniprising in combination, ascale-beam, a plurality of weights in the form of rock arms arranged inseveral `groups of identical units, a cam disc for holding each weightin elevated position, the cam discs allotted to a group of weights beingcombined to form a cani cylinder and a hey lever adapted to causedifferent angular move ments ot such cylinder whereby the single weightsof said group are lowered and brought to bear on said scale-beam oneafter the other.

3. A weighing and recording device comprising in combination, ascale-beam, a weight in the form of a roch arm, means for holding saidweight in elevated position., a key lever adapted to cause said weightto be lowered and to bear on said scale-beani, a toothed segment formingpart of said ley lever, a ligure wheel and means comprising a gear wheelfor transmitting motion from said segment onto said wheel.

4. A weighing and recording device com-` prising in con'ibination, ascale-beam, a weight in the form of a roclr arm, means for holding said.weight in elevated posi' tion, a lrey lever adapted to cause said weightto be lowered and to bear on said scale-bean'i, a toothed segmentforming part of said lrey lever, a ligure wheel and a type wheel. andmeans comprising a gear wheel for transmitting motion from said segmentonto said wheels.

5. A weighing and recording device comprising in combination, ascale-beam, a

weight in the form of a rock arm, means llt@ llO

holding said weight in elevated positiey lever adapte-d to canse said tobe lowered and to bear on said scale-beam, a toothed .p nient toi'mingpart ot said key lever, a 'ligure wheel and a type wheel, meanscon/iprising a gear wiieel for transmitting motion troni said seffmentonto said wheels and means for simultaneously d spiny/ing said ligurewl'ieel, operating said type wheel, printing the result with said typewlmi-l and locking said key lev (i. il, .veig 'ng and reci'nfding devicecock n g in combination, a scale beam, a t in the i Aocl: arm, means forin elevated position, :1 f se said weight to said scale-beam.

a type wheel, l 'for trans` wliees, a shelter displaceaole in 'liront olsaid ligure wheel and a linl; operatively con N said shutter with saidliey iever.

i?. A weighing' and rec rding device coniprisinrf in combination a scalebeam, a

weightin the torni of a roei; arm, means ttor nolclng said weight inelevated position, a lrey iev-er adapted to canse said weight to belowered and to bear on said scale-beam, a toothed segment forming partot said key lever, a ligure wheel and a type wheel, means comprising agear wheel 'tor trans mitting motion from said segment onto said wheels,a shutter displaceable in trent of said tignre wheel, a printing stampbelow said type wheel and operative connection between said shatter,said printing head and said key lever.

8. A weighing' and recording device co1nprising in combination a scalebeam, a weight in the torni of a rock arm, means for holding' saidweight in elevated position, key lever adapted to cause said weight tobe lowered and to bear on said scale-beam, a toothed segment formingpart of said ley lever, a figure wheel and a type wheel, meansconiprising a gear wheel tor transmitting motion from said segment ontosaid wheels, a shutter displaceable in liront et said ligure wheel, aprinting stamp below said type wheel, operative connection between saidshutter7 said printing head and said liey lever, a spring tending totorce said printing head upwards and means, adapted to be displaced bysaid liey lever, for locking said printing head in lowered positionagainst the action of said sprinO.

il. A weighing and recording device comprising in combination ascale-beam, a weight in the form of rock arm, means tor holding saidweight in elevated position, a liey lever adapted to canse said weightto be lowered and to bear on said scale-beam, a toothed segment ioriningpart of said key lever, a ligure wheel and a type wheel, meanscomprising a gear wheel Yfor transmitting motion from said seo'i'nentonto said wheels, a shutter displaceable in iti-ont o said ligure wheel,a printing stamp below said type wheel, operative connection betweensaid shutter, said printing head and said lrey lever and a pavfl andratchet wheel lfeed mecha- 1 NAn AFor a strip to be fed past` said typewheel.

l0. vA weighing and recording device comprising in combination, a scalebeam, a weight in the torln ot a rock arm, means l'or holding saidweight in elevated 'position a lizey lever adapted to canse said veightto be lowered and to bear on said scale-beam and means connected .vitlisaid ley lever 'tor lool-:ing this latter, after Vit has been actuated,in all positions ot the scale-beam excepting the position oitsubstantial equilibruim.

A weighing and recording' device comprising in combination, a scalebeam, a rail connected to said scale-bea1n, a weight vin the torni oit aroel-, arm, a cam disc :tor holding said weight in elevated position, ahey lever adapted to canse said cam disc to be rotated so as to allowsaid weight to be lor-:ered and to come to bear on said rail, and meansfor automatically locking said cam disc utter each individual angularmovement.

l2. A weighing and recording device comprising in combination, ascale-beam, a rail connected to said scale-beam, a weight in the 'lorinel a rock arm, a cam disc 'lor holding said .veight in elevated positionsaid cani disc being provioed with indentnres, a ley lever adapted tocanse said cam disc to be rotated so as to allow said weight to belowered and to come to bear on said rail, a rocl; arm adapted to catchin in dentures ol saidiealn disc and an arm on said key lever adapted toferry said rock arm into opera-- tive position.

In testimony whereof l aliir; my signatureA ARTHUR YWOLF` `i/ilitnessesCARL CONDNB'URY, RUDOLPH MESFIAN.

